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Physics 18 Online
OpenStudy (sophadof):

Help with physics, Question is attatched

OpenStudy (sophadof):

OpenStudy (sophadof):

Calculate the answer for each of the following and explain/show your reasoning. No credit for answers only. a) What is the magnitude and direction of the frictional force on the couch? b) What is the total force on the couch? c) What is the acceleration of the couch? d) (Advanced) How much time did it take to push the couch the 3 m?

OpenStudy (sophadof):

@undeadknight26

undeadknight26 (undeadknight26):

Well uhh I never did Physics... @GreenCat @Empty @ikram002p @imqwerty @ParthKohli @clamin @CShrix

OpenStudy (sophadof):

Haha that's ok(:

imqwerty (imqwerty):

what is the coefficient of friction? is it given in the ques?

OpenStudy (sophadof):

I have no idea, I literally don't know how to do this. :( @imqwerty

OpenStudy (sophadof):

WAIT I FOUND IT!! "You need to push the couch 3 m to the other side of the room. After the initial push to get it going you push on the 80 Kg couch with a steady horizontal force of 500 N. The coefficient of kinetic friction between the couch and the floor is 0.6." @imqwerty

imqwerty (imqwerty):

ok don't wry :) its not difficult

undeadknight26 (undeadknight26):

Don't just rub it in my face qwerts ;~;

OpenStudy (sophadof):

hahah!!

imqwerty (imqwerty):

so 1st we need to find magnitude and direction of frictional force the direction of frictional force is always opposite to the direction of motion of the body and magnitude of frictional force is given this formula->\[F=\mu N \]where μ=coefficient of kinetic friction N=total normal force the acts upon the body ok till now?

imqwerty (imqwerty):

lol traiq cx

undeadknight26 (undeadknight26):

Traiq. I hope that's a typo.

imqwerty (imqwerty):

sry of the typo *tariq :)

imqwerty (imqwerty):

*for

OpenStudy (sophadof):

Good!

undeadknight26 (undeadknight26):

Good boy. Any who carry on I'll stop spams <3

imqwerty (imqwerty):

ok so can u find the magnitude?

OpenStudy (sophadof):

348?

imqwerty (imqwerty):

how did u get that :) its not correct

OpenStudy (sophadof):

wait...300? haha im stupid

imqwerty (imqwerty):

if ur confused with the normal then the normal is nothing but N=mg where m=mass of body g=gravity no 300 is not correct

OpenStudy (sophadof):

:(

OpenStudy (sophadof):

I don't understand

OpenStudy (sophadof):

470!!

imqwerty (imqwerty):

sry mom called me to do some wrk

imqwerty (imqwerty):

yes :) it wuld be-> \[Friction=0.6 \times 80 \times 9.8\] Fiction=470.4 N

OpenStudy (sophadof):

It's ookay(: haha I got it!!! Thank you!!

imqwerty (imqwerty):

:)

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